<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div class="login">
        <div class="username">
            账号:<input id="username" type="text">
        </div>

        <div class="password">
            密码:<input id="password" type="text">
        </div>

        <button id="login">登陆</button>
    </div>


    <script>
        let login = document.getElementById("login");
        let username = document.getElementById("username");
        let password = document.getElementById("password");


        login.addEventListener('click', function () {
            // console.log(username.value, password.value);
            // 发接口请求
            let xhr = new XMLHttpRequest();
            xhr.open('get', `http://localhost:3000/login?username=${username.value}&psd=${password.value}`, true)
            xhr.send();
            xhr.onreadystatechange = function () {
                if (xhr.readyState === 4 && xhr.status === 200) {
                    console.log(xhr.responseText);
                    alert(xhr.responseText)
                }
            }
        })
    </script>
</body>

</html>